CVE-2022-48804 Information

Jul 17, 2024 cve

Description

In the Linux kernel the following vulnerability has been resolved:

vt_ioctl: fix array_index_nospec in vt_setactivate

array_index_nospec ensures that an out-of-bounds value is set to zero on the transient path. Decreasing the value by one afterwards causes a transient integer underflow. vsa.console should be decreased first and then sanitized with array_index_nospec.

Kasper Acknowledgements: Jakob Koschel Brian Johannesmeyer Kaveh Razavi Herbert Bos Cristiano Giuffrida from the VUSec group at VU Amsterdam.

Reference

https://git.kernel.org/stable/c/830c5aa302ec16b4ee641aec769462c37f802c90 https://git.kernel.org/stable/c/2a45a6bd1e6d651770aafff57ab3e1d3bb0b42e0 https://git.kernel.org/stable/c/170325aba4608bde3e7d21c9c19b7bc266ac0885 https://git.kernel.org/stable/c/ae3d57411562260ee3f4fd5e875f410002341104 https://git.kernel.org/stable/c/778302ca09498b448620edd372dc908bebf80bdf https://git.kernel.org/stable/c/ffe54289b02e9c732d6f04c8ebbe3b2d90d32118 https://git.kernel.org/stable/c/6550bdf52846f85a2a3726a5aa0c7c4399f2fc02 https://git.kernel.org/stable/c/61cc70d9e8ef5b042d4ed87994d20100ec8896d9

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